21101102223 has 8 divisors (see below), whose sum is σ = 28135479936. Its totient is φ = 14067063000.

The previous prime is 21101102207. The next prime is 21101102237. The reversal of 21101102223 is 32220110112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21101102223 - 2⁴ = 21101102207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101102203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172108 + ... + 267998.

It is an arithmetic number, because the mean of its divisors is an integer number (3516934992).

Almost surely, 2^21101102223 is an apocalyptic number.

21101102223 is a deficient number, since it is larger than the sum of its proper divisors (7034377713).

21101102223 is an equidigital number, since it uses as much as digits as its factorization.

21101102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169245.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21101102223 its reverse (32220110112), we get a palindrome (53321212335).

The spelling of 21101102223 in words is "twenty-one billion, one hundred one million, one hundred two thousand, two hundred twenty-three".